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Radiant|Lab Grown|IGI

4.78ct H VVS2 Radiant Lab Grown Diamond

EX • H/VVS2 • IGI LG816676519

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG816676519

Diamond specifications and retailer prices

From £749 GBP
As of October 31, 2026
Save £2,124 GBP (74%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,873 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.78ct lab-grown radiant diamond

This 4.78ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG816676519 or 816676519. Listed at 2 retailers as of October 30, 2026, with prices from £749 to £2,873, a £2,124 spread on the same certified stone. Brilliant Earth lists it at £2,873. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.78
Carat
H
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816676519
Dimensions11.51 × 8.47 × 5.73 mm
L/W Ratio1.36
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.51 mm8.47 mm4.78 ctH / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816676519
Side View
Table 68.0%Crown 45.5°Girdle: MediumPavilion 36.6°Culet: NoneDepth 67.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,873 GBP|Low: £405 GBP|High: £5,314 GBP|Avg: £2,102 GBP|-45.9%
Brilliant Earth
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£405 GBP
Retailer 2£749 GBP
Brilliant Earth£2,873 GBP

34 data points across 3 retailers

2 retailers£749 GBP to £2,873 GBP

A
Cheapest Retailer
-
£749 GBP
Most Expensive
B
Brilliant Earth
21236816A · Oct 30
£2,873 GBP
$3,850 USD
View
1 more retailer has this diamond
Prices start from £749 GBPSave up to £2,124 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
4.78ct Radiant
£749 GBP